131189120

素因数分解:

$2^7\times 5^1\times {\mathrm{204983}}^1$

素因数の和:205002

約数の個数: 32

約数和(自身を含む): 313625520

約数和(自身を除く): 182436400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 204983, 409966, 819932, 1024915, 1639864, 2049830, 3279728, 4099660, 6559456, 8199320, 13118912, 16398640, 26237824, 32797280, 65594560, 131189120]

約数ペア:

[(1, 131189120), (2, 65594560), (4, 32797280), (5, 26237824), (8, 16398640), (10, 13118912), (16, 8199320), (20, 6559456), (32, 4099660), (40, 3279728), (64, 2049830), (80, 1639864), (128, 1024915), (160, 819932), (320, 409966), (640, 204983)]